Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reconciliation between the U.S. federal statutory tax rate and effective tax rate
Statutory rate	35.00%	35.00%	35.00%	35.00%
State taxes	0.40%	1.10%	0.00%	1.10%
Taxes on foreign earnings	(11.10%)	(8.70%)	(9.80%)	(8.50%)
Credits and net operating loss utilization	0.70%	0.70%	0.70%	0.90%
Purchased intangible assets	1.10%	1.20%	1.00%	1.30%
Manufacturing deduction	(2.10%)	(1.70%)	(1.80%)	(1.80%)
Permanent items	0.90%	0.40%	0.70%	0.40%
Other	0.40%	0.40%	0.30%	0.30%
Effective tax rate	23.90%	27.00%	24.70%	26.90%